BS EN 14366-2004 Laboratory measurement of noise from waste water installations《废水装置噪声的实验室测量》.pdf

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1、BRITISH STANDARD BS EN 14366:2004 Laboratory measurement of noise from waste water installations The European Standard EN 14366:2004 has the status of a British Standard ICS 17.140.20; 91.140.80 BS EN 14366:2004 This British Standard, was published under the authority of the Standards Policy and Str

2、ategy Committee on 25 November 2004 BSI 24 November 2004 ISBN 0 580 44861 4 National foreword This British Standard is the official English language version of EN 14366:2004. The UK participation in its preparation was entrusted by Technical Committee EH/1, Acoustics, to Subcommittee EH/1/6, Buildin

3、g acoustics, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catal

4、ogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its cor

5、rect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests in

6、formed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 20, an inside back cover and a back cover. The BSI copyright notice displayed in this document i

7、ndicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN14366 November2004 ICS17.140.20;91.140.80 Englishversion Laboratorymeasurementofnoisefromwastewaterinstallations Mesurageenlaboratoiredubruitmisparle

8、sinstallations dvacuationdeseauxuses MessungderGeruschevonAbwasserinstallationenim Prfstand ThisEuropeanStandardwasapprovedbyCENon23September2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwith

9、outanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityof

10、aCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherla

11、nds,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwidef

12、orCENnationalMembers. Ref.No.EN14366:2004:EEN 14366:2004 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Notations 7 5 Principle of the test method .8 6 Equipment 8 7 Test facilities 9 8 Test specimen9 9 Test procedure and evaluation.12 1

13、0 Calculation of single number quantities .15 11 Precision.15 12 Expression of results 16 13 Test report 16 Annex A (normative) Wall structural sensitivity measurement 17 A.1 Measurement procedure .17 A.2 Applicability of the method.17 Annex B (informative) Background ; application of reciprocity fo

14、r calibrating the test wall 18 Bibliography 20 EN 14366:2004 (E) 3 Foreword This document (EN 14366:2004) has been prepared by Technical Committee CEN/TC 126 “Acoustic properties of building elements and of buildings”, the secretariat of which is held by AFNOR. This European Standard shall be given

15、the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2005, and conflicting national standards shall be withdrawn at the latest by May 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the

16、following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, S

17、weden, Switzerland and United Kingdom. EN 14366:2004 (E) 4 Introduction Noise from wastewater installations is generated by the flow and fall of water in the piping system. There are many different ways to install such systems in buildings, depending on national building codes. They may be firmly ce

18、mented into walls and floors, fixed by clips in walls and covered slabs, or hung exposed in the plenum above a suspended ceiling. It seems advisable, therefore, to define measuring methods for both structure- borne and airborne sound. Important noise sources are bends after vertical sections, but al

19、so discontinuities, e.g. inlets, couplings and sleeves. Apart from that the noise impact on the inhabitants of a building strongly depends on the material properties of the pipes, on the methods used in joining and fastening them and on the local building practice. EN 14366:2004 (E) 5 1 Scope This d

20、ocument: specifies methods for the measurement of airborne and structure-borne sound produced in waste water and rain water installations under laboratory conditions; defines the expression of the results. It is applicable to waste water piping systems and parts thereof, but not to the actual source

21、s of the wastewater, e.g. lavatories, toilets and bathtubs or any active units. It applies to pipes with natural ventilation and made of any common material in commonly used diameters (up to 150 mm). The results obtained can be used for the comparison of products and materials. It may serve in estim

22、ating the behaviour of waste water systems in a building under certain conditions. Nevertheless, this standard does not provide a normalized procedure for calculating the acoustical properties of such installations in a building. 2 Normative references The following referenced documents are indispen

23、sable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 61672-1, Electroacoustics - Sound level meters - Part 1: Specifications (IEC 61672-1:2002). E

24、N ISO 140-3:1995, Acoustics Measurement of sound insulation in buildings and of building elements Part 3: Laboratory measurements of airborne sound insulation of building elements (ISO 140-3:1995). EN ISO 354, Acoustics Measurement of sound absorption in a reverberation room (ISO 354:2003). EN ISO 6

25、926, Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels (ISO 6926:2000). ISO 5348, Mechanical vibration and shock Mechanical mounting of accelerometers. ISO 16063-21, Methods for the calibration of vibration and shoc

26、k transducers - Part 21: Vibration calibration by comparison with a reference transducer. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 waste water any type of water including rainwater evacuated from buildings into the sewer system 3.2 was

27、te water installation the total of pipes and all fixing components, used to evacuate waste water, but excluding the actual sources of the waste water, e.g. sinks, toilets, bathtubs, gutter or any active units (pumps) 3.3 specimen object of tests according to this standard. Specimens are simple waste

28、water installation systems with a single path of water flow. Any combination of commercial elements may be assembled to form a specimen EN 14366:2004 (E) 6 3.4 source room test room used for airborne sound measurement; the specimen is mounted inside the test room 3.5 receiving room test room used fo

29、r structure-borne sound measurement; the specimen is mounted outside the test room 3.6 standard configuration a mandatory form of specimen used for comparison 3.7 standard mounting mandatory mounting conditions for the standard configuration 3.8 standard test wall mandatory test wall used for compar

30、ison 3.9 wall structural sensitivity normalised ratio between a point force exciting the test wall and the sound power radiated by the test wall. The wall structural sensitivity is measured according to a reciprocity method described in Annex A 3.10 reference wall standardized wall of 250 kg/m 2used

31、 for normalisation of the measurement results and described by a reference structural sensitivity spectrum (given in clause 9) 3.11 frequency range of measurement range in 1/3 octave bands over which measurements are carried out EN 14366:2004 (E) 7 4 Notations f frequency in Hz T ereverberation time

32、 measured in the source (emission) room, in seconds (according to EN ISO 354) T rreverberation time measured in the receiving room, in seconds V evolume in the source room in cubic metres V rvolume in the receiving room in cubic metres L saverage sound pressure level due to structure-borne sound mea

33、sured in the receiving room (according to EN ISO 140-3) before correction for background noise, in decibels L taverage total sound pressure level measured in the source room (according to EN ISO 140-3) including airborne and structure-borne sound, before correction for background noise, in decibels

34、L Bmeasured background sound pressure level, in decibels L sstructure-borne sound pressure level after correction for background noise, in decibels L ttotal sound pressure level after correction for background noise, in decibels L snstructure-borne sound pressure level normalized to an equivalent ab

35、sorption area of 10 m 2 , in decibelsL tntotal sound pressure level normalized to an equivalent absorption area of 10 m 2 , in decibels L anairborne sound pressure level normalized to an equivalent absorption area of 10 m 2 , in decibels L s,AA-weighted structure-borne pressure level, in decibels L

36、a,AA-weighted airborne sound pressure level, in decibels D Aattenuation values of the A-weighted filter, in decibels T mmeasuring time, in seconds L SSwall structural sensitivity level, in decibels L SSRstructural sensitivity level of the reference wall, in decibels L SSstructural sensitivity correc

37、tion in decibels : L SS= L SS L SSRL scstructure-borne sound characteristic level, in decibels : L sc= L sn L SSL Wsound power level (ref 10 -12watts) of the sound reference source, in decibels L vvibration velocity level (ref 10 -9m/s) at the clamp fixing, in decibels, before correction for backgro

38、und vibration L vvibration velocity level (ref 10 -9m/s) at the clamp fixing, in decibels, after correction for background vibration EN 14366:2004 (E) 8 5 Principle of the test method 5.1 Structure-borne sound measurements (index s) The specimen is mounted outside the test room (receiving room), con

39、nected as in practice to the test wall using the fixing material specified by the manufacturer of the system. A steady flow of tap water is applied and the total sound transmitted into the test room is measured (L s ). The specimen is then disconnected from the test wall and the water system operate

40、d in order to measure the background noise. The values L sare then corrected for background noise giving the values L s . These values are then normalized (see 9.5) to an equivalent absorption area of 10 m 2using the measured reverberation time T rof the receiving room giving the values L sn . After

41、 the last step, the results are corrected for the difference in structural sensitivity between the test wall used and the reference wall (correction given in clause 9). 5.2 Airborne sound measurement (index a) The specimen is mounted on a test wall inside the test room (source room). Appropriate ope

42、nings in the ceiling and in the floor are provided. A steady flow of tap water is applied. The sound in the test room, produced as airborne sound radiated directly from the object but also as structure-borne sound radiated by the wall is measured (L t ). The water flow is stopped in order to measure

43、 the background noise. The values L tare then corrected for background noise giving the values L tand normalized to an equivalent absorption area of 10 m 2using the measured reverberation time T e of the source room giving the values L tn . Later in the progress of calculation the structure-borne co

44、ntribution is subtracted giving the values L an . 6 Equipment 6.1 Requirements for the frequency range of measurement Throughout this standard the frequency range is limited to the eighteen 1/3 octave bands with mid-frequencies from 100 Hz to 5 000 Hz. If additional information is required in the lo

45、w frequency range, measurements at 1/3 octaves 50 Hz, 63 Hz and 80 Hz can be made; guidance for such additional measurements is given in EN ISO 140-3:1995 Annex F. 6.2 Requirements for the acoustic equipment The equipment shall comply with the requirements of EN ISO 140-3:1995 clause 4. 6.3 Requirem

46、ents for the hydraulic equipment The hydraulic equipment shall be able to generate flow rates between 0,5 l/s and an upper limit depending on the inner diameter of the tested specimen (given in 9.2). The equipment shall be able to measure the flow with an accuracy of 5 %. 6.4 Requirements for the wa

47、ll structural sensitivity measuring equipment The reciprocity method requires the use of a reference sound source calibrated according to EN ISO 6926. The vibration transducer used shall be calibrated according to ISO 16063-21 and fixed according to ISO 5348. EN 14366:2004 (E) 9 7 Test facilities 7.

48、1 Construction requirements 7.1.1 Test room The test room shall have a volume of at least 50 m 3and an interior height of (3,0 0,5) m. The test wall shall not be less than 3,5 m wide. Openings in the ceiling and in the floor are provided for the installation of the test objects. A combination of two adjacent test rooms may be advantageous, allowing the simultaneous measurement of the airborne and the structure-borne sound. Additional space above and below the test room is required to ensure the standardised falling height of the measured system of about 6 m